Damage detection based on surface fitting of curvature mode shape for reinforced concrete spatial lattice structure
LIU Wei1,2 GAO Wei-cheng1 LI Hui2 SUN Yi1
1. Department of Astronautic Science and Mechanics, Harbin Institute of Technology, Harbin 150001, China; 2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
Abstract：Firstly, system configuration and structure characteristics for reinforced concrete spatial lattice structure were introduced. Then, the curvature mode surface fitting damage identification theory was proposed. And the curvature mode surface fitting damage index (CMSFDIi) and the average of curvature mode surface fitting damage index (CMSFDIiA) were defined respectively. The damage can be located by the difference between curvature mode and its fitted value. The process of damage identification can be carried out using the measured data obtained from the damaged structure rather than the intact structure and theoretical models. Finally, orthorhombic reinforced concrete open-web grid structure was taken as an example to illustrate the feasibility and effectiveness of the method. The results show that this method can not only identify the single-location damage but also the multi-location damage. It was suitable for damage identification and structural health monitoring on reinforced concrete spatial lattice structure.
刘伟;高维成;李惠;孙毅. 钢筋混凝土空间网格结构曲率模态曲面拟合损伤识别研究[J]. , 2013, 32(3): 68-74.
LIU Wei;GAO Wei-cheng LI Hui SUN Yi. Damage detection based on surface fitting of curvature mode shape for reinforced concrete spatial lattice structure. , 2013, 32(3): 68-74.
2013, Vol. 32 
